Cloth cutting machine



Aug. 6, 1935. J. B. GURY, JR 2,010,514

` CLOTH CUTTING MACHINE Filed Nov. 5, 1934 3 Sheets-Sheet l FTQJL ug. 6, 1935. J. B. GURY, JR

CLOTH CUTTING MACHINE Filed Nov. 3, 1934 3 Sheets-Sheet 2 Aug. 6, 1935. v J. B. GURY, JR

CLOTH CUTTING MACHINE Filed NOV'. 5, 1934 5 Sheets-Sheet 3 Patented Aug. 6, 1935 CLOTH CUTTING MACHINE John B. Gury, Jr., St. Louis, Mo., as signor to J. B.

Gury Mfg. Co., St. Louis, Mo., a corporation of Missouri Application November 3, 1934, Serial No.l 751,270

15 Claims.

This invention relates to a cloth cutting machine of the type used in cutting a stack of cloth in which a series` of superimposed layers comprise the stack, and in which the cutter is moved along a table upon which the stack is placed.

With cloth cutting machines of this type, which employ a reciprocating knife, it has hereto been impossible to make a cut within the margin of the goods, That-is to say, a machine would only operate successfully where the cut started from an edge of the goods. An object of this invention is to provide an improvement in a machine employing a reciprocating knife whereby a cut can be started within the margin of the goods without the necessity of commencing the cut from the margin or edge.

Another object of the invention is to provide, in a machine of thecharacter described, means for raising the motor and reciprocating mechanism, and thereby the lower end of the knife, with reference to the base of the machine.

Other and specific objectswill be apparent from the following detail description, taken in connection with the accompanying drawings.

Fig. l is an elevation of a machine embodying the invention at a right angle to the direction of its movement in fcuttingj Fig. 2 is an elevation of the machine'in line with the direction of cutting movement;

Fig. 3 is a view showing the `details of construction of one of the rollers, upon which the base is mounted;

Fig. 4 is an elevation partly in section showing I further details of the construction illustrated in Fig. 3;

Fig. 5 is a plan View of the machine; and

Fig. 6 is a detail taken approximately on line 6 6, Fig. 1.

The embodiment of the invention, specifically illustrated in the drawings, includes'a base I supporting an overhanging arm or bracket 2, which has at its outer end a head 3 adjustably supporting a pedestal or post 4, which carries at its upper end a motor 5 and guides 6. A cross-,head 1, to which a cutting knife or blade 8 is clamped, is positioned for reciprocation in the guides by a` pitman 9 pivoted on a crank pin I0, which is attached to a crank 49 on the shaft II of the motor. The knife 8 extends downward from the cross-head I through an appropriate longitudinal slot 55 in the pedestal, and has an exposed saber point so that it may pierce by thrusting as well as cut along a longitudinal edge. The pedestal or post 4 may be raised or lowered as desired by a gear I2 which meshes in a rack I3 formed on one face of the pedestal. The gear I2 is secured to a shaft I4, to which 'is also attached a gear I5 driven by a helical pinion IS positioned at a right angleuthereto. The pinion I6 ls attached to a shaft Il which may be turned by a crank I8. The shaft` I4 is Vjournalled in a sleeve 29, and a bracket 3|, which supports the shaft I1, is adjustably supported on the outer end of the sleeve 29. A resilient split washer 43 about the shaft I'I and adjacent the crank I8 acts as a detent, l0 which with the friction between the angularly disposed gear I5 and pinion I6 serves to maintain the pedestal in any selected vertical position.

The foregoing constitutes a. summary description while the essential features of the invention are pointed out in the appended claims. A more detailed description of the invention and oftheV specific embodiment illustrated in the drawings now follows.

The base I is a relatively low member elevated at a slight distance above a surface A upon which' it is intended to operate, that is, the table or bench upon which plies of fabric B are laid. The base is supported by the roller 2| positioned at one end of the base I, as shown in Figs. 3 and 4, and by a pair ofv rollers 22 at the other end of the base. Y

The roller 2| is mounted on a shaft 23, which is positioned in a longitudinal socket 24 in the base. The shaft 23 is held in position by clips 25 secured to the underside of the base I by screws 2li. Springs 21,'positioned in appropriate sockets in the base, bear against the shaft 23 to prevent `rattlingor` chattering. The roller 2| is positioned adjacent the b'ottom of the bracket 2 which is secured tothe base I by screws 28.

As previously explained the arm or bracket 2 overhangs the base and carries at its outer end a boss or block`3, in which the pedestal 4 is journalled for vertical adjustment. The shaft I4, to which is attached the gear I2 meshing with the rack I3 onthe post 4, is mounted for rotation in a sleeve 29 held in an appropriate socket in the block 3 by a-set screw 30.

A bracket 3| is secured to the sleeve 29 by a screw 32. At its outer end the bracket 3| carries a boss Y33, in which is journalled the shaft I'I, carrying at one end the pinion I6, which drives the gear I5, and at its other end the crank I4;

It will now be understood that upon turning the crank I8 the pinion I6 will drive the gear I5 and with it the gear` I2 to raise or lower the pedestal 4.. This changes the vertical position of the reciprocating mechanism carried at the top of the pedestal and also raises or lowers the knife 8.

The peculiar arrangement of the bracket 3l with reference to the sleeve 29 permits its adjustment by loosening the screw 32 so that it, with the crank I8, can be adjusted to a variety of different positions to suit the convenience of the operator. That is to say, the bracket 3l is split, as shown in dotted lines in Fig. 1 and as shown in detail on Fig. 6, so that by loosening the screw 32 the bracket 3l may readily be moved to any selected position about the sleeve 25.

The block 3 carries an adjustable pressure foot 33, which is supported at the lower end of a stem 32%. An angular guidev piece 35Y is secured by a screw 3&5 to the block 3 and fits in an appropriate groove on the inner. side of thev stem 34. The block 3 has a stud 31 projecting outwardly from it through the piece 35 and through an appropriate slot 38 in the stem 34. The stem 35 may be held in any adjusted position by means of a thumb nut 39 on the stud 31, a spring 4E) and a washer il! being interposed between the nut 39 and the outer face of the stem 34, as best shown in Fig. 6. It will thus be seen that the foot 33 may be selectively positioned to accom-v modate various depths of fabric.

It will be understood, in accordance withv the practice in the art that the pressure foot 32 has an appropriate groove to accommodate the knife tween the boss 33- onthe-'bracket 3l-sand the crank i8 in order to` provide a detent. yThus, when the elevation of the pedestal lthis set at any particular place the` friction betweenl the gears l5 and l@ and the action of the detentwasher 43 is sufficient to hold thel devicein that adjusted position.

The-particular construction of thefmotor and the reciprocating mechanismris no partk of' this L; invention except by way of proper combination,

,f1 t5v and the motor is connected vtothetop ot-the' pedestal Il by means of-screws .passing through' the plate B5 and into the top lof Vthe pedestal 4. The frame ofr` the motor is integral-.also 'with a' vertically ektendingfportion onhousing 4:1 in` which are positioned-the guide members .6 by

means of screws 48;' yThe crosshead` 't is mounted for -recipro'cation in the vertical guides 6.

The shaft l l Yof the motorhas-aa'counterbalanced crank Il@ carrying the crank pin IAG, upon which is pivotally mounted'oneend ofV the pitman 9 Ywhichhas itsother end-connected to thev cross-head l by a pin 5l. =A knobf52-is attached to'the rear end ofthey motorshaft H,whereby` the position .ofthe shaftv and the position ofthe knife can be manually adjusted when the motor is'fout of` circuit.

A handle 53,'by which the device may be moved, is secured to-theframe members 44, and 45 by means of screws -5llonly one of which-is shownY in thev drawings, the plate 45 havingsa-downwardly extending lug or boss 45a into which thefscrews 54' extend.

The pedestalA-has agroove 55. throughout itsentire length to accommodate theknife 8. `This groove acts bothl as ga guide. and vas aguar-d for the knife. By reason of economy in manufacture the pedestal i is circular and to prevent its rotation it has a spline 56 in which the end of a pin 5l engages. The pin 5l has a groove 58 to accommodate the edge of the knife. These details are best shown in Fig. 6.

The boss 3 is split as shown at 5B, Figs. 1 and 6, and the adjacent parts are held together by screws Si?, which may be adjusted tov take up wear.

One of the uses of the improved machine is :to cut slits in cloth for pockets of a garment. It has-particular utility, of course, where any cut is desired which is internal of the margin Aof the goods and where the cut is not desired to run from the edge.

ln operating the device, a stack of fabric is laid -upona table, the pedestal is elevated so that the lower point of the knife 3 may clear the fabric and the base l is inserted underneath the fabric. Ordinarily the pattern will be sketched on the top-layer` of fabric, and when the machine is moved to the proper place, with the pile of fabric overlying the base l, the knob 52 is rotated so that the machine and the knife may be accurately positioned. The motor is then turned on and the handle i8 is turned gradually to lower the knife and until the entire pile of fabric is pierced. The machine is then moved on the table along the line to be cut in the conventional manner. When the cut is completed the motor is turned off and the mechanism is raised by the crank I8 and the machine removed.

As previously explained, different operators prefer the crank I8 differently positioned and toaccommodate this preference the screw 32, which clamps the bracket 3i in place, may be loosened and the crank assembly may then be moved to any desired position when the screw 32 is again tightened.

It will be obvious that various changes may be made in the details of construction, within thc scope of the appended claims, without departing from the spirit of this invention, and that parts of the invention may be used without the whole.

l claim:

1. In a cloth cutting machine the combination including a base movable along a table underneath a pile of cloth, a bracket supported by and overhanging the base, a pedestal slidably mounted in the bracket, a cutting tool and reciprocating mechanism therefor supported by the pedestal, and manually operating mechanism associated with the bracket for adjusting the elevation of the pedestal.

2. In a cloth cutting ymachine the combination including a base movable along a table underv neath a pile of cloth, a bracket supported by and overhanging the base, a pedestal slidably mountedk in the bracket,a cutting tool and reciprocating mechanism therefor supported by the pedestal, manually operating mechanism associated with the bracket for adjusting the elevation of the pedestal, andV detent mechanism for maintaining the pedestal in adjusted position.

.8. In a cloth cutting machine the combination including a base movable along a table underneath a pile of cloth, a bracket supported by and overhanging the base, a pedestal slidably mounted in the bracket, a cutting tool and reciprocating mechanism therefor supported by the pedestal, mechanism for adjusting the elevation of the pedestal including a rack on the pedestal, agear meshing with the rack and secured to a shaft supported by the bracket, and manually operable means for driving the shaft.

4. In a cloth cutting machine having a base movable along a table underneath a pile of cloth, a bracket supported by the base and a pedestal slidably mounted in the bracket and supporting a knife and reciprocating mechanism therefor, the combination comprising mechanism for adjustably positioning the pedestal in the bracket including a rack on the pedestal, a pinion engaging the rack, a shaft for driving the gear, a sleeve for the shaft supported by the bracket, and means adjustably supported on the sleeve for rotating the shaft.

5. In a cloth cutting machine having a base movable along a table underneath a pile of cloth, a bracket supported by the base and a pedestal slidably positioned in the bracket and supporting a knife and reciprocating mechanism therefor, the combination comprising mechanism for adjustably positioning the pedestal on the bracket including a rack on the pedestal, a shaft supported by the bracket and having on one end a pinion engaging the rack, a helical gear and helical pinion at an angle to each other for driving the shaft, and a crank for manual engagement to rotate said helical pinion.

, 6. In a cloth cutting machine the combination including a base movable along a table underneath a pile of cloth, a bracket supported by and overhanging the base, a pedestal slidably mounted in the bracket, reciprocating mechanism supported by the bracket, a cutting blade supported by said reciprocating mechanism and mounted in a slot in the pedestal, and manually operable mechanism associated with the bracket for adjusting the elevation of the pedestal.

7. In a cloth cutting machine the combination including a base movable along a table underneath a pile of cloth, a bracket supported by and overhanging the base, a pedestal slidably mounted in the bracket, reciprocating mechanism supported by the bracket, a blade supported by said reciprocating mechanism and having a piercing point and a cutting edge, and manually operable mechanism associated with the bracket for adjusting the elevation of the pedestal and thereby the lower limit of the blade.

8. In a cloth cutting mechanism, a base, a bracket mounted on and overhanging the base, a pedestal slidably mounted on the bracket, a cutter reciprocably mounted on the pedestal, and a pressure foot device mounted on the bracket and adjustable toward and from the base.

9. In a cloth cutting machine, a base, a pedestal, means mounting the pedestal on the base for reciprocation toward and from the same, a cutter blade, a cut-out in the pedestal to receive the cutter and provide a guard therefor, and means for preventing the pedestal from turning about its axis, but permitting its axial reciprocation.

Ytransforming the rotation of the handle into reciprocation of the pedestal, and means mounting the handle on the base so that it may be adjusted to a suitable angular position relative to the base.

12. In a device of the kind described, a base, a pedestal, means reciprocably mounting the pedestal on the base, said means including a bracket fixed to the base and supporting the pedestal, means for reciprocating the pedestal in the bracket including a shaft, interengaging means on the shaft and pedestal for moving the latter upon rotation of the former, and means for mounting the shaft on the pedestal for oscillation thereabout without disengaging the interengaging means.

13. In a device ofthe kind described, a reciprocable member, a support upon which the reciprocating member is mounted, a crank, means interengaging the crank and the reciprocating member 'for reciprocation of the latter upon rotation of the crank, said interengaging means including a shaft, a bracket upon which the crank is mounted, said bracket being rotatable about said shaft to adjust the position of the crank.

14. In a device of the kind described, a supporting element, a reciprocating member, means to reciprocate the member upon the element including a shaft, a crank, gearing between the shaft and the crank, a bracket mounted on the supporting element and in Vwhich the crank is mounted, said bracket being rotatable about said shaft whereby to adjust its angular relation to the supporting element without disengaging said gearing.

15. In adevice of the kind described, a supporting element, a reciprocating member, means to reciprocate the member upon the element including a shaft, a crank, gearing between the shaft and the crank, a bracket mounted on the supporting element and in which the crank is mounted, said bracket being rotatable about said shaft whereby to adjust its angular relation to the supporting element without disengaging said gearing, together with friction means between said shaft and said bracket to hold said crank in adjusted position relative to the bracket.

JOHN B. GURY, JR.

Vfio 

